Sarina shares a phone plan with her brother, Quentin. Each month, they are allowed to send a limit of 1000 text messages. Last month, they did not go over their 1000 text message limit. Sarina knows she sent 400 text messages.
How many text messages, on average, could Quentin have sent per day in the month? Last month, there were 30 days.
Graph the number of text messages as an inequality on the number line.
If Sarina sent 400 text messages last month, then Quentin sent 1000 - 400 = 600 text messages.
To find Quentin's average number of text messages per day, we divide the total number of text messages he sent (600) by the number of days in the month (30):
600 / 30 = 20
Quentin sent an average of 20 text messages per day last month.
Graphing the number of text messages on a number line, the inequality would look like:
0 ≤ x ≤ 1000